Hitch plug



FIG. 1 is a top perspective view of a hitch plug showing my design;

FIG. 2 is a front plan view thereof;

FIG. 3 is a side elevational view thereof; the other sides being the same as the side shown;

FIG. 4 is a rear plan view thereof; and,

FIG. 5 is a cross-sectional side elevational view thereof taken along line 5—5 shown in FIG. 2.

The Os and Xs shown in phantom in FIG. 1 are for illustration purposes only and form no part of the invention. 

The ornamental design for a hitch plug, as shown and described. 